Just as most websites today use captchas run by one or two companies, we may see a scenario unfold where most brick and mortar businesses use a facial recognition blacklisting system run by one or two companies. Get labelled as trouble by the system and you'll be banned by every store in town.
That’s a great point. For that matter, imagine that being maintained by Verisign or the like. Get a ding on your social credit report, and voila, you can’t walk into a grocery store anymore.
